Nut-lock.



O. A. NORLUND.

NUT LOCK.

APPLICATION rum) MAR. 16, 1910.

979,55 Patented Dec. 27, 1910.

OLOF A. N ORLUN D, F WILLIAMSPORT, PENNSYLVANIA.

NUT-LOCK.

Specification of Letters'latent.

Patented Dec. 27, 1910.

Application filed March 16, 1910. Serial No. 549,620.

To all whom it may concern:

. Be it known that I, OLOF A, NORLUND, citizen of the United States, residing at Williamsport, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the fol 3 msm applied thereto.

' Y of sections. One end of the lowing to be a full, clear, tion of-the invention, such as will enable others skilled in the art to which is appertains to make and use the same.

My invention relates to new and useful improvements in nut locks and more particularly to that class wherein a split washer is used for holding the nut inits locked posit-ion and -my object is to provide a washer having a slit therein extending tangentially to the axis of the washer. J

' A further object ends of the slit portion with a curved projection which will engage the nut and hold the same against casual rotation, and,

A further object is to provide teeth upon washer and so construct the 1 one face of the same that they will form a.-s'eat in the object against which the washer is pressed.

Other objects and advantages will be hereinafter referred to and more particularly pointed out in the specification and claim.

In the accompanying drawings which are made a part of this application, Figure 1 is a transverse sectional view, through an ob ject showing my improved locking mecha- Fig. 2 is an end elevation of the bolt and parts through which the bolt is extended. Fig. 3 is a face view of the locking washer. Fig. 4 is a similar View of the opposite face of the'washer, and, Fig. 5 is an edge elevation of tlie washer.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several indicates a bolt which may be con- .structed in the usual or any views, 1

preferred manner and 2 indicates the objects through which the bolt is introduced and in this instance, the object is constructed of a number bolt is'threa'ded to receive a nut 3, which serves to hold the sectiom of the object locked order to prevent the nut from turning on the bolt or from being casually removed from the bolt, I provide my improved form of split washer 4, the channel 5 formed by splitting the washer extending tangentially of the contour of the opening 6 through the is to provide one of the together and in a in the same and exact descripdisplaced by the teeth, thereby forming the One end 7 of the washer remains plane with the body of the Washer, while the opposite end 8 is extended outwardly and the peripheraledge thereof provided with a curved projection 9, against which the peripheral edge of the nut will engage when the nut is being turned on or off the bolt. By this construction, it will be readily seen that when the nut is turned inwardly, the end 8 will be gradually moved inwardly until it is brought in the same plane with the end 7, while the outward pressure occasioned-by theend 8 will hold the objects on the bolt in assembled position and thus compensate for any slack occasioned by shrinkage of the object. It will further be seen that by providing the curved projection, whichis so arranged as to engage the fiat faces of the nut and overhang the same when the nut is turned to predetermined positions, said nut will be washer.

positively held against reverse rotation until a wrench or similar object is applied thereto.

One face of the washer is provided with a plurality of teeth 10, the inner ends of which teeth terminate with the edge of the open ing 6 and the side faces of said teeth converge at a pointa distance from the edge of the opening and as said teeth aresubstantially V shaped in cross section, a sharp cutting edge 11 will be provided for each tooth, said the outer end of the tooth to the inner end thereof, said edge terminating at the convergence of the side walls. ing the teeth in'this manner, they are made conical as well as substantially V shaped in cross section'and will readily enter the object against which the washer is forced cutting a seat'therein, even though the object be formed of metal. By placing the teeth highest portion of the teeth will engage the ob ect adjacent the opening in the object and in view of the trend of the teeth, the material composing the object will be readily a seat in the object to receive the teeth and as the displaced portion of the object will tend to enter the opening therethrough, said teeth will form the seats without becoming brokenor mashed, as is the case with the usual form of teeth placed upon washers of this class. I i The teeth 10 are formed integral with washer and in view of this fact, the

By constructadjacent the opening 6 in the washer, the

be seen that when the nut has been turned can be rotated in either direction when washer can be as cheaply constructed as the adapted to be turned on to said bolt, of a usual form of washer and it will likewise washer having'an opening therethrough and be seen that by placing a Washer around the a slit extending from the opening to the bolt and adjacent the head thereof, said bolt outer edge of the washer, said slit being at will beheld against rotation. while the nut a tangent to the contour of the opening is being turned thereon and it will likewise tegral teeth on one face thereof, which teeth are conical and substantially V shaped in cross section, the base of said teeth being positioned at the edge of the opening in the washer, whereby they will engage the object at the edge of the opening therethrough and means upon one end of the washer adapted to hold the nut against casual rotation.

In testimony whereof I have signed my name to this specification in the presence 0 two subscribing witnesses.

OLOF A. nonLUND.

on to the bolt a suflicient distance to force the teeth of the washer into the object, the washer will be held against rotation, while the curved projection on the end of the washer will hold said nut against casual rotation. It' will likewise be seen that by providing the compound curvature on the projection, that although the projection extends over the face of the nut yet said nut power is applied thereto.

What I claim 1s:-

A nut lockfcompnsmg the combination lVitnes ses: with a bolt, adapted to be introduced HARRY T. STIGER, through an opening in an object and a nut E. M. Graces.

through the washer, said washer having in- I 

